Flexible piston connection.



No. 991,999. PATENTED JUNE 9-0, 1908.

- H. HESS.

FLEXIBLE PISTON 909990121091.

APPLICATION FILED JULY 27. 1907.

5] wuevflcozf- HENRY Hess $19 31 is wtozmcfl HENRY HESS, Oi WAWA, PENNSYLVANLL.

FLEXIBLE PISTON CONNECTION.

Specification of Letters Patent.

Patented June so, 190

Application filed July 27, 1907. Serial No. 885,857.

To all whom it may concern:

Be it known that I, HENRY llnss, a citizen of the United States residing at Nawa, in the county of Delaware and State of Pennsylvania, have invented certain new and usefullmprovenients in Flexible Piston Connections, of which the following is a specification, reference being bad therein to the accompanying drawing.

My invention relates to flexible piston connections for use in heat, steam, internal combustion and other engines, and more I ar ticu-larly to that class thereof designer to insure the proper attachment of the connecting rod to the iston and at the same time to obviate various diihculties and disadvantages in existing methods, as hereinaiterset forth. i Referring to the drawing: Figure i is e longitudinal section of a piston, piston-rod, etc, as employed in a well known type of engine, and illustrating particularly one form of connecting devices, on which my invention isan improvement: Fig.- 2 is a sec tional view of the some parts with my improvement'embodied therein, but taken at right angles to the section shown in Fig. 1;

Fig 3 is'a sectional view of the same, the 7 section being at right angles to that of F 1g. 2:

and Fi 4 is a transverse section on the line l-4 0 Fig. 2. p

In the form of mechanism shown in Fig. l it will be noted, that the iston-rod A is connected to the piston '15 y pin (1, which passes through a cylindrical opening in the end of the ,p1ston-rod, thereby permitting a certain amount of radial play about the pin,

this redial motion being ordinarily necessary in connection with the longitudimrl reciprocation of the rod, due to the connection of the latter at its other end to a crank, in the manner well understood. The chicl problem attending this form 01 connection is that of lubrication. Not only are the parts dili'icult of access but their great heat quickly dries out the oil or other lubricntor applied,

and this latter" condition particularly exists in internal combustion engines. Many enginesalso' have the parts Vertically arranged. and the problem is thereby even further com.- plicnted. To obviate these dillicultics end objections is the purpose of my invention and I accomplish the result by a form of flexible connection wherein nolubrication is necessary.

Referring to Figs. 2, 3, and 4, which illustrate my improvement, it will be observed that the piston-rod D is connected to the piston E by a flexible connection, shown by way of example as an elastic plate or blade F, which connects the end of rod]? to the crossbar G of the formed of the proper material and of the reqe uisite dimensions to ermlt it to yield laterally and allow the radial motion of thc pistonrod previously described and as indicated by dotted'lines in Fig. The bending of the blade thus permits the same function as the pivotal connection shown in ig. 1 ,namely, the oscillation of the piston-rod,and as there is no friction between arts moving piston E. This blade is v relatively to each other, lubrication is un' necessary.- As shown in the drawing, the blade F is fastened in place by being 'h'rmly seated in suitable recesses in the cross-bar r and in the end ol" rod D, but obviously other securing means may be employed for the purpose, when. desired,

I am aware that it is old to cmploy'such a flexible or elastic bladc'lor somewhat analogous purposes in other mechanisms, such as the suspension of pcndulums in clocks,

or as a substitute to r the ordinary knife-edge in testing machines and weighing apparatus, and the like, and i lay no claim to such employment, my invention consisting in its orondest terms in the combination of such a flexible and elastic connecting member with a piston and piston-rod.

\Vl'uit I claim and desire to secure by Letters Patent ol" the United States is as follows:

1. Tho combinuliou ol' the piston and the piston-rod with it lloxiblo and elastic laterally-yielding connecting member.

The combination ol the piston-rod with a llcxible an elastic laterally-yielding blade for connecting them.

.ln testimony whereof I have allixed my signature in presence of two witnesses.

i nNnY nnss. W itncsses:

Nn'r'rin L. llAIIN, C. l). McCALLA.

iston and the 

